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Supabase 拓展：App 接入 Supabase 后端服务（Auth + PostgreSQL + Storage...
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Supabase 拓展
适用场景
组件组成
组件间关系
开发前准备工作
1. 获取 Supabase 配置
2. 配置 Auth 组件
3. 使用功能组件
SupabaseAuth
Properties
Events
Methods
SupabasePgSQL
Proper...
Best way to detect that HTML5 is not supported
...
try {
document.createElement("canvas").getContext("2d");
alert("HTML5 Canvas is supported in your browser.");
} catch (e) {
alert("HTML5 Canvas is not supported in your browser.");
}
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Jquery - How to make $.post() use contentType=application/json?
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I ended up adding the following method to jQuery in my script:
jQuery["postJSON"] = function( url, data, callback ) {
// shift arguments if data argument was omitted
if ( jQuery.isFunction( data ) ) {
callback = data;
data = undefined;
}
return j...
Chrome desktop notification example [closed]
...ddEventListener('DOMContentLoaded', function() {
if (!Notification) {
alert('Desktop notifications not available in your browser. Try Chromium.');
return;
}
if (Notification.permission !== 'granted')
Notification.requestPermission();
});
function notifyMe() {
if (Notificatio...
Set value of hidden field in a form using jQuery's “.val()” doesn't work
...". I've revised the example to include the code you pasted above, with an alert to confirm the value change: jsbin.com/elovo/2/edit
– Andy E
Jun 5 '10 at 10:18
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static const vs #define
...are is needed to make sure client code is recompiled (e.g. the Makefile or script supplying the definition should be listed as a dependency)
My personal opinion:
As a general rule, I use consts and consider them the most professional option for general usage (though the others have a simplici...
Why does !{}[true] evaluate to true in JavaScript?
...ted as false:
http://jsfiddle.net/67GEu/
'use strict';
var b = {}[true];
alert(b); // undefined
b = !{}[true];
alert(b); // true
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WITH (NOLOCK) vs SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
...nsaction Isolation Level Read Uncommitted in a View (you can only have one script in there in fact), so you would have to use (nolock) if dirty rows should be included.
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Perform debounce in React.js
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Without persist (default behavior: pooled event)
onClick = e => {
alert(`sync -> hasNativeEvent=${!!e.nativeEvent}`);
setTimeout(() => {
alert(`async -> hasNativeEvent=${!!e.nativeEvent}`);
}, 0);
};
The 2nd (async) will print hasNativeEvent=false because the event proper...
How do I use shell variables in an awk script?
I found some ways to pass external shell variables to an awk script, but I'm confused about ' and " .
7 Answers
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